ICC P2 Commercial Plumbing Inspector Exam
Complete Study Guide (150+ Questions)
Multiple Choice with Answers & Rationales
EXAM OVERVIEW
The ICC P2 Commercial Plumbing Inspector certification validates
knowledge of commercial plumbing systems, including water
supply and distribution, sanitary drainage, venting, storm drainage,
and special systems such as medical gas piping . This certification is
one of the four prerequisites for the Commercial Combination
Inspector (C5) designation .
Feature Details
Primary 2024 International Plumbing Code (IPC), 2024 Internationa
References Fuel Gas Code (IFGC), ICC A117.1-2017
Number of
60 multiple-choice
Questions
Time Allowed 2.5 hours (150 minutes)
Format Open Book
,Feature Details
Passing Score 75% (scaled score)
Content Areas :
Content Area Weight Questions
General Requirements 5-10% 3-6
Fixtures 3-15% 2-9
Water Heaters 10-12% 6-7
Water Supply and Distribution 14-19% 8-11
Sanitary Drainage 16-19% 10-11
Vents 11-15% 7-9
Traps, Interceptors, Special Piping 10-11% 6-7
Storm Drainage 4-7% 2-4
Health Care Plumbing 6-8% 4-5
,SECTION 1: GENERAL REQUIREMENTS (Questions 1-25)
1. Which code serves as the primary reference for the ICC P2
Commercial Plumbing Inspector exam?
A) International Residential Code (IRC)
B) International Plumbing Code (IPC)
C) International Building Code (IBC)
D) Uniform Plumbing Code (UPC)
Answer: B
Rationale: The P2 exam is based primarily on the International
Plumbing Code (IPC), with additional references to the International
Fuel Gas Code (IFGC) and ICC A117.1 for accessibility .
2. The primary purpose of the International Plumbing Code (IPC) is
to:
A) Regulate plumbing contractor licensing
B) Establish minimum plumbing system requirements to protect
public health and safety
C) Set water conservation standards only
D) Establish pipe manufacturing specifications
Answer: B
Rationale: The IPC establishes minimum regulations for plumbing
systems to protect public health, safety, and welfare through proper
design, installation, and maintenance of plumbing systems .
, 3. What is the minimum time required for a hydrostatic test of a
commercial drainage system before it is concealed?
A) 5 minutes
B) 10 minutes
C) 15 minutes
D) 30 minutes
Answer: C
Rationale: Drainage systems must be tested with water at a
minimum pressure of 5 psi or 10 feet of head for at least 15
minutes with no visible leakage. The inspector must verify that all
required tests are conducted .
4. During a final inspection, the inspector observes that piping for
the sanitary drainage system is not properly supported. According
to the IPC, what is the maximum horizontal spacing for supporting
2-inch ABS pipe?
A) 3 feet
B) 4 feet
C) 5 feet
D) 6 feet
Answer: B
Complete Study Guide (150+ Questions)
Multiple Choice with Answers & Rationales
EXAM OVERVIEW
The ICC P2 Commercial Plumbing Inspector certification validates
knowledge of commercial plumbing systems, including water
supply and distribution, sanitary drainage, venting, storm drainage,
and special systems such as medical gas piping . This certification is
one of the four prerequisites for the Commercial Combination
Inspector (C5) designation .
Feature Details
Primary 2024 International Plumbing Code (IPC), 2024 Internationa
References Fuel Gas Code (IFGC), ICC A117.1-2017
Number of
60 multiple-choice
Questions
Time Allowed 2.5 hours (150 minutes)
Format Open Book
,Feature Details
Passing Score 75% (scaled score)
Content Areas :
Content Area Weight Questions
General Requirements 5-10% 3-6
Fixtures 3-15% 2-9
Water Heaters 10-12% 6-7
Water Supply and Distribution 14-19% 8-11
Sanitary Drainage 16-19% 10-11
Vents 11-15% 7-9
Traps, Interceptors, Special Piping 10-11% 6-7
Storm Drainage 4-7% 2-4
Health Care Plumbing 6-8% 4-5
,SECTION 1: GENERAL REQUIREMENTS (Questions 1-25)
1. Which code serves as the primary reference for the ICC P2
Commercial Plumbing Inspector exam?
A) International Residential Code (IRC)
B) International Plumbing Code (IPC)
C) International Building Code (IBC)
D) Uniform Plumbing Code (UPC)
Answer: B
Rationale: The P2 exam is based primarily on the International
Plumbing Code (IPC), with additional references to the International
Fuel Gas Code (IFGC) and ICC A117.1 for accessibility .
2. The primary purpose of the International Plumbing Code (IPC) is
to:
A) Regulate plumbing contractor licensing
B) Establish minimum plumbing system requirements to protect
public health and safety
C) Set water conservation standards only
D) Establish pipe manufacturing specifications
Answer: B
Rationale: The IPC establishes minimum regulations for plumbing
systems to protect public health, safety, and welfare through proper
design, installation, and maintenance of plumbing systems .
, 3. What is the minimum time required for a hydrostatic test of a
commercial drainage system before it is concealed?
A) 5 minutes
B) 10 minutes
C) 15 minutes
D) 30 minutes
Answer: C
Rationale: Drainage systems must be tested with water at a
minimum pressure of 5 psi or 10 feet of head for at least 15
minutes with no visible leakage. The inspector must verify that all
required tests are conducted .
4. During a final inspection, the inspector observes that piping for
the sanitary drainage system is not properly supported. According
to the IPC, what is the maximum horizontal spacing for supporting
2-inch ABS pipe?
A) 3 feet
B) 4 feet
C) 5 feet
D) 6 feet
Answer: B
